Apparatus for the treatment of water and other liquids by ultra-violet rays.



V. HENRI, A. HELBRONNER & M. VON REOKLINGHAUSBN. APPARATUS FOR THETREATMENT OF WATER AND OTHER LIQUIDS BY ULTRA-VIOLET RAYS.,

APPLICATION FILED 1\'O\7.10,1913,

Patented Mar. 16, 1915.

1% w U P mw a 2 n ww/ w M 7\ 4 manure to: m murmur or warm Am) o'rnnnmoms 1e! Unm-vmm'r UNITED STATES PATENT OFFICE.

vrc'ron mm, or rams, um mat murmur. AND Max vox nuc'xtme- BLUSIH, OISUB-B81738, IBANCEASSIGNORS, BY mm: ASSIGNMENTS, T In q 3-- U. V. com-m,INC A GORPPBATION 0I NEW YORK.

RAYS.

specification of Letters Patent. ori inal application fled emu: :1, 1m.lerhl Io. scam. mum and an. ammo. ma mumm- Patented Mar. s, 1915.

10, 1018. Serial Io. 800,047.

i To allwliomit maticoncem: I

Be it known citizen of the French Republic, res1d1ng at Paris, France,Anem a Hnnnnonnmz, a c1t1- .zen of the French Refipblic, residing atSuresnes, France, and x VON Breme- HAUsnN, a subject of the GermanEmperor, residing at Suresnes, France, have mvented a new and usefulImprovement in A paratus for the Treatment of Water and other Liquids byUltra-Violet .Rays, of which the followmg is a specification, thisapplication being a division of application Serial No. 589,995, filedOctober 31, 1910.

This invention relates to the treatment and sterilization of liquids bymeans of ultra-violet rays, and particularly to. the sterilization ofsuch hqulds as are only slightly or not at all opaque to the ra s, andhas for its object the construction 0 appa-. ratus .suitablefor thepurpose. I

It has already been proposed to sterilize water by means of ultra-violetrays produced b a mercury va or lamp 'having a y rough which these. rayswill pass, quartz, silica and some special container of a materialqualities of glass being examples of such material and in ourapplicationfor Letters Patent Serial N 0. 565611 we have described apparatus ofthis kind in which the l1qu1 d is allowed to flow through an opencondu1t in a zigzag undulating 'or circular manner.

' In oneform of apparatus baflie plates are employed for the purpose ofcausing the liquid to approach and recede from the source of the rays.It has been found that in order to secure the greatest efliciency it isnecessary that the water or other liquid while under the influence ofthe ultra-violet rays should be thoroughly agitated or stirred and that:the baflie plates used should not cast shadows and the present inventionhas for its object to provide improved apparatus whereby this resultwill be readily achieved.

According to the present invention the apparatus isprovided with baflleplates adapted to guide and circulate the liquid as it is flowingthrough the sterilizin chamber, which are arranged radially witreference to the position of the source of ultra-violet rays employed sothat no shadows. are

formed the a paratus nopartibles of liquid passing t ough thesterilizing chamscribe, with reference to the accompanying drawings,several forms of construction of the apparatus by way of example.

Figure 1 is a view in sectional elevation of a sterilizing chamber onthe .line II-II of Fig. 2 which is a .section on the line 1-1 of Fig.'1, Figs. 3 and 4 are sectional elevations of a modified form ofconstruction and Fig. 5 is a 'view in sectional elevation of another.form of the apparatus.

The form of apparatus shown in Figs. 1 and 2*: comprises a cylindricaltank 1 in the upper part or cover of which the lamp 2 is located, In thelower part of the apparatus partitions or'bafiles' 3 and 4: are arrangedin the form'of truncated cones lying one withl in the other,- theinnermost 4 of these cones.

being preferably made of -the greatest, height. A centrallylocated tube5 leads from. the innermost; cone "through the bottom of the tank andforms the delivery pipe of the apparatus.. One or more apertures 6, areprovided in certain of the'inn'er cones to permit the ,Water to passtherethrough. The inlet for the water is shown at 7, and is so arrangedthat water 1s admitted to the outer compart- -ment 8 of the tank in atangential direction so that it flows through the compartment with acircular motion until it reaches such a height that it flows over theedge of the outermost cone 3 into the inner compartment 9, where therotary motion is continued. At

the bottom of this compartment it passes through the aperture 6 into, acentral compartment 10, where it rises until it overflows into thedelivery tube 5 and flows away from the outlet 11. The delivery tube isprovided with cross bafile plates, 12 forfthe purpose of checking tooviolent rotary motion of the liquid. Near the top of the cylindricaltank a baflie plate '13 is arranged to prevent the water creeping up thesides of the apparatus into the cover of the same. As shown 'in Fig. 1the lamp 2 is located in such a position that the lightproceeds'approximately from the apex of the truncated cones so that thebafile plates 3 and 4 do not cast shadows and the light has free accessto all parts of the liquid. The circular ;motion which is given to thewater as it passes through the apparatus causes it to be thoroughlyagiis necessary in order that the liquid may be efliciently sterilized.I In order to insure the t e apparatus is arranged so that thewater.

flows past one baflie plate at or near the top,

bottom and so on alternately. Furthermore the apertures provided inadjacent baflle plates are not placed in the same vertical or Ihorizontal line but diagonally or staggered with respect to one another.Drain cocks 14 are provided in order. that the apparatus may be emptiedatany time when it is not. required for use so that the water may notget stagnant therein. A window-1s provided as shown at 15 in order thatthe opera tion of thelamp may be watched. n a sterilizing element ofthis type the water flows through the apparatus by virtue of thepressure in the .water mains and may be collected in a cistern. Thecover of the tank is not hermetically sealed so that the lamp operatesin air at ordinary atmospheric pressure and no device is necessar formaking up any deficiency of air. I desired the lamp may be mounted onaframe in such a way that it can be tilted from the outside of theapparatus without removing the cover of the tank. h

In another form of construction Figs. 3 and 4, the container or tank hasa rectangular base 16, two of the sides 17 converging toward the hood 18where the lamp 2 is located. Baflie plates 19 are arranged in a radialdirection from the lamp toward the base of the apparatus so as to form anumber of compartments 20. The water enters near the bottom of the tankat 21 and passes successively through the compartments 20 until itreaches the outlet 22.. The apertures 23 leading from one compartment tothe next are arranged alternately in the top and bottom of the bafiieplates 19. Drain cocks 14 are also provided for emptying the chambers ofwater when the apparatus is not in use.

In the modification of .the apparatus 1 and so forth throughout thevarious orms of the apparatus constructed in accordance with thisinvention are preferably made of tated which,-as has already beenpointed out, 2

.vvith, ap aratus'suitable for and past the next bafile plate at or nearthe means of or coated with material which will present a reflectingsurface so. that; the rays *WhlOh pass through;,,th e*1iquid are caused:to .re-

traverse the same and are therefore utilized to their fullest extent.Reflectors ma if desired, be placed abov ethe source 0' Emil 8 rays soas to reflect the rays toward the v llqi lldto be sterilized.eatestpossible movement of the liquid hroughoutthis specification. wehave used the term sterilization in connection object, ut we wish it tobe un erstood that car ing out this" we claim the use of the variousforms of apparatus herein described and modifications thereof fortreating liquids generally withultra-violet rays. We claim as our.invention 1.-.In apparatus for treatmg-li means of u tra-violet rays,the com ination of a rece tacle through which the li uid to be treate iscaused to pass,'a source 0 ultraviolet rays located above said recetacle, and

baflie plates; arranged so that their surfaces v with each other andparallel fnof theultra-violet rays.

2. In ap 1 means of ultra-violet rays, the com ination e0 atus fortreating liqtiids by of a rezptacle through which the li uid to a betrea violet rays which is smaller than the base of said rece taclelocated above the sameand radial ba e plates in said receptacleradiating from the source of ultra-violet rays and a apted not to shadeany part of the-in terior thereof from the ultra-violet'rays.

3. In ap aratus for treating 1i uids by is caused to pass, a'source 0ultrameans of u tra-violet rays, the com ination of a rece tacle throughwhich the li uid to cause to pass, a source of ultra-violet rays locatedabove said rece tacle and an inlet pipe for the liquid to treatedarranged tangentially to. the circular base. I

5. In apparatus for treating li uids by 7 means ofultra-violet rays,,thecom ination I of a receptacle through which the liquid to be treated iscaused to pass, bafiies adapted to direct the liquid upward and downwardin its passage through said receptacle and a a horizontal inlet pipeadapted to give the liquid a lateral movement additional to its verticalmovement while undergoing treatment.

6. In app u tra-violet rays, the com ination aratus for treating li uidsby. I

of a receptacle through which the liquid to be treated is caused topass, a source .of

1,1s2,2 ce

ultra-violet rays located above said receptacle, an inlet pipetangentially arranged at the side of said receptacle and an outlet pipeextending nearly to the top of said receptacle and having its axissubstantially vertical under the source of the rays.

7. In apparatus for treating liquids by means of ultra-violet rays, thecombination of a receptacle having a circular base through which theliquid to be treated is caused to pass, a source of ultra-violet rayslocated above said receptacle, an inlet pipe tangentially arranged atthe side of said receptacle and an outlet pipe in the center of thebase.

8. In apparatus for treating liquids by means of ultra-violet rays, thecombination of a receptacle through which the liquid to be treated iscaused to pass, a source of ultra-violet rays located above saidreceptacle and baii'ie plates in said receptacle arranged so that theirlines of intersection with a vertical plane are not parallel with eachother with openings alternately at the tops and bottoms of said baiileplates to cause the liquid to be treated to pass up ward and downwardtherebetween.

9. In apparatus for treating liquids by means of ultra-violet rays, thecombination of a receptacle through which the liquid to be treated iscaused to pass, baffle plates in the form of truncated cones lying onewithin the other in said receptacle, means for ad mitting the liquid tobe treated near the periphery of the tank in a tangential direction,means for causing said liquid to pass over and through the baflie latesalternately, an outlet ipe co-axial with the truncated conical ba es anda source of ultraviolet rays located approximately at the apex of thetruncated conical baffle plates.

10. In an apparatus for treating liquids by means of ultra violet-rays,in combination, a receptacle through which the liquid to be treated isadapted to pass, a source of ultra-violet rays located above saidreceptacle, and bafiies for agitating and directing the liquid to betreated in its passage through said receptacle, the walls of the bafflesand the interior walls of said receptacle made of a material that willpresent a reflecting surface whereby the rays are caused to retraversethe liquid and are thereby utilized to their fullest extent.

in testimony whereof We have hereunto subscribed our names this tenthday of May, 1913.

VICTOR HENRI.

ANDRE HELBRONNER. MAX VON RECKLINGHAUSEN.

Witnesses:

HANSON C. Coxn, JOHN BAKER.

